I was wondering if anyone can please help me with a question I have regarding the FT-857D's SWR meter.

Can anyone please tell me the level that it represents? I'm assuming no lines is 1:1, but when it shows one row of pixes, or gets up 1/2 way, is that 1.5 or 2 or 3? How far up can the SWR go before I should look at retuning my antenna?

The easiest way for me to find out would be to put an external SWR on there, and compare the two, but unfortunately I don't have one that I can try this out with, so I'm hoping for some help here.

Thanks & Regards

Adza